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  1. Calendar - Wikipedia

    • A calendar is a system of organizing days. This is done by giving names to periods of time, typically days, weeks, months and years. A date is the designation of a single and specific day within such a system. A calendar is also a physical record (often paper) of such a system. A calendar can also mean a list of planned events, such as a court calendar, or … See more

    Etymology

    The term calendar is taken from kalendae, the term for the first day of the month in the Roman calendar, related to the verb calare 'to call out', referring to the "calling" of the new moon when it was first seen. Latin calendariu… See more

    History

    The course of the Sun and the Moon are the most salient regularly recurring natural events useful for timekeeping, and in pre-modern societies around the world lunation and the year were most commonly used as time units. … See more

    Systems

    A full calendar system has a different calendar date for every day. Thus the week cycle is by itself not a full calendar system; neither is a system to name the days within a year without a system for identifying the years. … See more

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  2. Gregorian calendar - Wikipedia

     
  3. List of calendars - Wikipedia

  4. History of calendars - Wikipedia

  5. Calendar - Simple English Wikipedia, the free encyclopedia

  6. Gregorian calendar - Simple English Wikipedia, the free …

  7. Gregorian calendar | Definition & Facts | Britannica

    Gregorian calendar, solar dating system now in general use. It was proclaimed in 1582 by Pope Gregory XIII as a reform of the Julian calendar. The Gregorian calendar differs from the Julian only in that no century year is a leap year …

  8. World Calendar - Wikipedia

    The World Calendar is a 12-month, perennial calendar with equal quarters. [ 1] Each quarter begins on a Sunday and ends on a Saturday. The quarters are equal: each has exactly 91 days, 13 weeks, or 3 months. The three months in …

  9. Calendar year - Wikipedia

  10. Calendar date - Wikipedia

  11. What Is a Calendar? - timeanddate.com

    Calendar definition and meaning: Solar and lunar, tropical and sidereal – why did humans invent calendars? Current year in Gregorian, Muslim, and Chinese calendar.

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  12. Calendar | Chronology, History, & Types | Britannica

  13. Calendar systems used throughout the world - Vivid Maps

  14. Calendar date - Simple English Wikipedia, the free encyclopedia

  15. Calendar - Wikimedia Commons

  16. Wikipedia:Calendars - Simple English Wikipedia, the free …

  17. Calendar era - Simple English Wikipedia, the free encyclopedia

  18. Gregorian calendar - Wikimedia Commons

  19. Importance and structure of the calendar | Britannica

  20. The History of Calendars and How They Evolved - Calendar

  21. The History of the Calendar - Calendar

  22. Free Printable Monthly Calendars 2024 - Wiki Calendar

  23. File:Zodiac Calendar 2024.pdf - Wikimedia Commons

  24. Calendar Wiki | Fandom